| 一种短波通信中基于DSP的低速率语音编码技术 |
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| 引用本文： | 陈华,关宇东,王健. 一种短波通信中基于DSP的低速率语音编码技术[J]. 应用科技, 2007, 34(8): 9-13 |
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| 作者姓名： | 陈华 关宇东 王健 |
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| 作者单位： | 1. 哈尔滨理工大学,应用科学院,黑龙江,哈尔滨,150040
2. 哈尔滨工业大学,电子与信息技术研究院,黑龙江,哈尔滨,150001 |
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| 摘 要： | 介绍了一种应用在短波通信中的码率为1．5Kbps低速率语音编码算法，此算法基于MELP（mixed excitation linearp rediction）混合激励线性预测语音编码算法的声码器模型，并对算法进行改进，降低复杂度和速率，在DSP芯片的硬件系统中实时运行了该算法，最后给出了算法测试仿真结果。
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| 关 键 词： | 低速率语音编码 矢量量化 |
| 文章编号： | 1009-671X（2007）08-0009-05 |
| 修稿时间： | 2007-05-28 |
A DSP-based low rate speech coding technology in short-wave communications |
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| CHEN Hua,GUAN Yu-dong,WANG Jian. A DSP-based low rate speech coding technology in short-wave communications[J]. Applied Science and Technology, 2007, 34(8): 9-13 |
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| Authors: | CHEN Hua GUAN Yu-dong WANG Jian |
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| Affiliation: | 1. College of Applied Science, Harbin University of Science and Technology, Harbin 150040, China; 2. Electronic and Information Technology Research Institute, Harbin Institute of Technology, Harbin 150001, China |
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| Abstract: | A 1.5 Kbps low rate speech coding algorithm applied in short-wave communications is introduced,which takes advantages of the vocoder model of MELP(mixed excitation linear prediction) speech coding algorithm,so that the complexity and bit rate are reduced.The algorithm was run in real time in a hardware system containing DSP chip.Finally the simulation results are presented. |
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| Keywords: | MELP DSP |
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